Is iphone 11 waterproof case profitable to sell on Amazon United States?

The niche generates $54K/yr across 15 tracked products. 90-day search growth is +5.1%. Flapen's verdict: Skip it (39/100).

How competitive is the iphone 11 waterproof case niche?

11 brands and 17 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 86% of demand.

What do buyers complain about in iphone 11 waterproof case?

Top complaints mined from reviews: Size-Overall, Ease Of Use, Durability. The return rate is 4.3%.

When does demand for iphone 11 waterproof case peak?

Demand peaks in Jul–Aug; the busiest month runs 2.7× the quietest.

What does it cost to enter the iphone 11 waterproof case niche?

Listings span $8.75–$30.03; the average listing price is $17.92 (sweet spot $15–$100). The average incumbent carries 10,705 reviews — the moat a new listing must climb.

iphone 11 waterproof case

Skip it

A small market ($54K/yr) — this niche doesn't clear our bar today.

Avg price

Great$17.92

avg listing price — sweet spot $15–$100

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Price range

Good$8.75–$30.03

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Okay3.4%

search→purchase rate — share of searches ending in a sale

Returns

Okay4.3%

return rate — above 5% kills the launch gate

Competition

Okay66%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay86%

top-5 brand share — brands hold most of the demand

Growth

Okay+5.1%

90-day search growth — must beat 0% to launch

Review moat

Bad10,704.6

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$54K

$54K/yr · 89K searches

According to Flapen's Amazon United States niche tracking, iphone 11 waterproof case is a $54K/yr Amazon United States market (89K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 39/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

iphone 11 waterproof case market data

Units sold / yr: 3K–4K; avg 100–250/product
Revenue / yr: $54K–$72K; units × avg price
Conversion rate: 3.4%
Avg BSR: #4,632
Page quality: 0%
Prime: 100%
Sponsored: 93%
Out of stock: 25.3%
Avg brand age: 39 months
Avg seller age: 183 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

66%

Top 20: 100%

Open market

11%

SPORTLINK37%
LOVE BEIDI22%
ZWWADR13%
Cozycase9%
LifeProof6%
jaroco3%
Open — no brand owns it (5 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — +5.1% search growth over the last 90 days.

Peak months: Jul, Aug · busiest ÷ quietest = 2.7×

Open Trend

Top iphone 11 waterproof case search terms

iphone 11 waterproof case23K/yr +12.4%3.8% conv.
waterproof iphone 11 case11K/yr -2.9%3.1% conv.
iphone 11 phone case waterproof10K/yr -13.1%2.8% conv.
iphone 11 waterproof phone case8K/yr +33.3%3.4% conv.
iphone 11 lifeproof case9K/yr -16.8%3.9% conv.
iphone 11 case waterproof12K/yr -9.3%3.7% conv.
waterproof phone case iphone 115K/yr +31.5%2.0% conv.
waterproof case for iphone 113K/yr +41.6%3.0% conv.
lifeproof iphone 11 case5K/yr -0.7%3.7% conv.
water proof phone case iphone 112K/yr +31.5%1.2% conv.

All search terms

Top iphone 11 waterproof case products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SPORTLINK Waterproof Case for iPhone 11 Full Body Heavy Duty Protection Full Sealed Cover Shockproof Dustproof Built-in Clear Screen Protector Rugged Case for iPhone 11 6.1 Inch Black

SPORTLINK$20.064.3★12,028 rev

ZWWADR for iPhone 11 Waterproof Case with Screen Protector Full Body Protector Shockproof Dustproof Dirtproof Heavy Duty IP68 Waterproof Case for iPhone 11(6.1inch) (Clear)

ZWWADR$19.024.2★4,430 rev

SPORTLINK for iPhone 11 Waterproof Case - Built-in Shockproof Screen Protector - IP68 Underwater Military Dropproof Full Body Protection Cover for iPhone 11 6.1 inch (Black)

SPORTLINK$20.684.3★2,319 rev

Cozycase TOP Military IP68 Waterproof Case for iPhone 11 - Heavy Duty 360 Shockproof Full Body with Screen Camera Protector Double Water Dust Drop Proof Hard Rugged Tough Bumper Front Back Cover Black

Cozycase$20.474.2★14,802 rev

LOVE BEIDI for iPhone 11 Waterproof Case 6.1 Screen Protector Underwater Shockproof Full-Body Dustproof Rugged Case for Aplle iPhone 11 (Cyan Green)

LOVE BEIDI$19.164.1★6,590 rev

Newest

by launch date

jaroco Magnetic for iPhone 11 Case [Compatible with MagSafe][Military Grade Drop Protection][Heavy Duty Protection][Non-Slip][Shockproof] 2-Layer Durable Bumper Phone Case 6.1-Black

jaroco$9.0911,796 rev

1y ago

Diverbox for iPhone 11 Case [Shockproof] [Dropproof] [Tempered Glass Screen Protector] Heavy Duty Protection Phone Case Cover for Apple iPhone 11 (Black-3in1)

Diverbox$10.0910,174 rev

2y ago

Lamicall Waterproof Phone Pouch Case - [2 Pack] IPX8 Beach & Cruise Essentials Touch Screen Easy Lock Cell Phone Dry Bag for iPhone 17 16 15 14 13 12 11 Pro Max Plus Galaxy S25 fit 7 with Case

Lamicall$8.7510,154 rev

3y ago

LOVE BEIDI for iPhone 11 Waterproof case 6.1 Rugged Case with Screen Protector Shockproof Full-Body Dustproof Case for iPhone 11 - Black

LOVE BEIDI$15.53622 rev

3y ago

SPORTLINK for iPhone 11 Waterproof Case - Built-in Shockproof Screen Protector - IP68 Underwater Military Dropproof Full Body Protection Cover for iPhone 11 6.1 inch (Black)

SPORTLINK$20.682,319 rev

4y ago

What buyers say about iphone 11 waterproof case

What buyers praise and complain about, mined from review topics.

What buyers love

Water Resistance19%

“Totally Waterproof”

Quality-Overall13%

“Well made and easy to use”

Value For Money10%

“Great value”

Advertised Vs Actual Product8%

“As advertised”

Size-Overall7%

“Great Fit”

Drop/Impact Protection6%

“Works well, protective”

Ease Of Use5%

“EASY TO USE”

Durability5%

“Amazing durability”

Efficiency4%

“the pouch is working great”

Strength3%

“Strong and quality case, perfect”

What buyers complain about

Size-Overall12%

“My phone barely fit”

Ease Of Use10%

“too hard to use”

Durability9%

“Broke in 1 week”

Water Resistance7%

“I cannot rate how waterproof the case is”

Quality-Overall5%

“Cheap product”

Charging5%

“The closure system for the charge port is falling apart from opening it to charge”

Compatibility-Overall5%

“This did not fit my iPhone 17pro max”

Touch/Button Controls4%

“The touch screen didn't work very well through the cover, unfortunately”

Defective Material/Parts3%

“Product was broken when received”

Thickness2%

“These are thick plastic”

Top return reasons

Size-Overall61%

Compatibility-Overall6%

Value For Money6%

Advertised Vs Actual Product4%

Ease Of Use3%

Functionality-Overall3%

Quality-Overall2%

Water Resistance2%

Touch Screen1%

Color1%

Common questions

Is iphone 11 waterproof case profitable to sell on Amazon United States?: The niche generates $54K/yr across 15 tracked products. 90-day search growth is +5.1%. Flapen's verdict: Skip it (39/100).
How competitive is the iphone 11 waterproof case niche?: 11 brands and 17 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in iphone 11 waterproof case?: Top complaints mined from reviews: Size-Overall, Ease Of Use, Durability. The return rate is 4.3%.
When does demand for iphone 11 waterproof case peak?: Demand peaks in Jul–Aug; the busiest month runs 2.7× the quietest.
What does it cost to enter the iphone 11 waterproof case niche?: Listings span $8.75–$30.03; the average listing price is $17.92 (sweet spot $15–$100). The average incumbent carries 10,705 reviews — the moat a new listing must climb.